Improvement in machinery por pointing and reducing wire



0 L HOPSON & H P BROOKS MAGHINERY FOR POINTING AND REDUCING WIRE.

Patented Feb. 26, 1867.

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Q. L. HOPSON, OF WATER-BURY, CONNECTICUT, AND H. P. BROOKS, OFWOLCOTTVILLE, CON N ECTICU'IL.

Letters Patent .Z\ 0.'62, 336, dated February 26, 1867; 'antedatadFebruary 15, 1867.

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TO ALL WHOM IT AY" coNcERN=- Be it known that we, ORINL. HOPSON, .ofWaterbury, in the county of New Haven, and State of Connecticut, andHEMAN P. BROOKS, of Wolcottville, in the county of Litchfiel l, andState of Connecticut, have invented, mitde, and applied to use, acertain new and hseful Improvement in Machinery for Reducing or PointingWire, 850.; and we do hereby declare the following to be a full, clear,and exact description of the said invention, reference being had to theannexed drawing, making part of this specification, wl1ercin Figure 1 isan end view of the dies and parts connected with their support andmovement.

Figure 2 is a section at the line rc x, longitudinally of the revolvingshaft; and

Figure 3 is a similar sectional view at the line y y.

Similar marks of reference denotethc same parts.

Ourpresent invention is an improvement upon that for which LettersPatent were granted to us August 9, A. 1864, and reissued December 12,1865, for machinery for pointing wire, &c.

The nature of the present invention consists in a pair of diesintroduced at the end of a shaft within an undercut or dove-tailedcross-groove, s'aid dies being regulated .in the extent of their openingby the points of conical or tapering-screwspassing through-them and-intocavitiesin thehottom et'said cross-groove, said screws being held from,working loose by set-nuts. -The dies are formed of four piecesoimctal,'two of vwhich are formed with depressions to act on the metal tohe reduced or pointed, and may be changed with facility, and the othertwo .(called hereafter die-blocks) carry said adjusting screws. The diesare operated progressively "around the article to be compressed orpointed, by being revolved in contact with stationary cams or tappets,

the wire remaining stationary as 'in our aforesaid patent, or by thetappets and wire both'revolving, the former rotating around the ends ofthe'dic-blocks.

In the drawing, a is the sh'aft, with a cross-groove at the end,undercut or formed as a dove-tail; b b are the dies, and c c thedie-blocks, through which pass the adjusting screws cl d, withvtaperingpoints entering cavities in the bottom of the groovein a, so that thewire, as pressed into the die or shape in the faces of b b, can onlycause said dies to open the amount required for making the next andprogressive reduction. e e are set-nuts, which we find necessary toprevent the screws 01 01 becoming loose from the vibration orconcussion. Around the shaft (1 is the tappet-holderf, carrying thetappets or camsg g and his a ring through which screws 1' 1. pass toadjust the tappetsorcams. It will be understood that when the shaft a isrevolved, (or the tappets and wire as aforesaid,) the dies arecloscd twoor more times during each revolution, and act progressively around thewire or rod to give to ita round taper, or other form corresponding tothat. of the dies.

What we claim, and desire to secure by Letters Patent, is-

1. The dies 6 b, and die-holdersc c, introduced in :ln undercut grooveatthe end of the shaft a, in combination with two or more .pairs oftappets or' equivalent mechanism for closing said dies two or more timeseach revolution, substantially as set forth.

2. We claim the tapering-pointed screws d d, and set-nuts c e, incombination with the dies and the tapering screw-sockets in the shaft atthe back of the dies, the parts being arranged substantially as and fortho purposes set forth.

In witness whereof we have hereunto set our signatures thistwenty-fourth day of April, A. D. 1866. 'ORIN L. HOPSON,

HEMAN P. BROOKS, Witnesses: r

Jenn ONrrnn, Jr., D. G. Porn-m.

